MiMi Auto Parts
EXPANSION TANK WITH CAP, Cooltec

EXPANSION TANK WITH CAP

Brand: Cooltec

SKU: 402919

Category: COOLING, WATER BOTTLE

R1 725,00 incl. 15% VAT

✓ In stock, ships nationwide via The Courier Guy

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Fitment: Fits selected BMW models. Confirm exact fitment before ordering.

Product Description

This Cooltec expansion tank with cap is designed for the cooling system of specific BMW diesel models. The expansion tank, also known as a cooling water bottle, plays a vital role in maintaining the correct coolant level and pressure within your vehicle's engine, helping to regulate temperature and prevent overheating. It comes with an integrated threaded cap and multiple hose connection ports for secure and reliable installation.

This part is compatible with selected BMW diesel models, including E81, E82, E87, E88, E90, and X1 E84 fitted with N47 or N47N engines. To ensure a perfect fit, please confirm your BMW's model, year, engine size, and engine code before ordering.

Common symptoms of a failing expansion tank include coolant leaks, low coolant warnings, visible cracks, frequent overheating, or coolant odours in the engine bay. You may also notice fluctuating temperature gauges or steam from under the bonnet, indicating a possible issue with the cooling water bottle.

Replacement is recommended if you detect any leaks, cracks, or if the cap no longer seals properly. Addressing these issues promptly will help maintain optimal engine cooling and prevent more serious engine damage.

Order your BMW expansion tank with cap from MiMi Auto Parts for reliable performance and peace of mind. We offer nationwide delivery throughout South Africa and are always available to assist with fitment confirmation and advice.

Common signs this part may need replacement

  • Coolant leaks around the expansion tank
  • Frequent low coolant warnings
  • Visible cracks or deformation on the tank
  • Overheating engine
  • Coolant odour in the engine bay
  • Steam or moisture near the tank
  • Fluctuating temperature gauge
  • Coolant residue on surrounding components

Typical replacement guidance

Replace the expansion tank if you notice any leaks, cracks, or if the cap fails to hold pressure. Timely replacement prevents coolant loss and potential overheating, safeguarding your engine from costly damage.

Why timely replacement matters

A faulty expansion tank can lead to coolant loss and engine overheating, which may result in severe engine damage. Timely replacement ensures your BMW's cooling system operates efficiently and reliably.

Vehicle Compatibility

This part is confirmed to fit the following vehicles:

  • BMW 1 (E81) 2006 – 2011 120 d (N47 D20 A|N47 D20 C) – 130 kW / 177 HP
  • BMW 1 (E87) 2004 – 2011 120 d (N47 D20 A|N47 D20 C) – 130 kW / 177 HP
  • BMW 1 Convertible (E88) 2007 – 2013 120 d (N47 D20 A|N47 D20 C) – 130 kW / 177 HP
  • BMW 1 Coupe (E82) 2007 – 2013 120 d (N47 D20 A|N47 D20 C) – 130 kW / 177 HP
  • BMW 3 (E90) 2004 – 2011 320 d (M47 D20 (204D4)) – 110 kW / 150 HP
  • BMW 3 (E90) 2004 – 2011 320 d (N47 D20 A|N47 D20 C) – 130 kW / 177 HP
  • BMW 3 (E90) 2004 – 2011 320 d (N47 D20 C) – 135 kW / 184 HP
  • BMW 3 (E90) 2004 – 2011 330 d (M57 D30 (306D3)) – 170 kW / 231 HP
  • BMW 3 (E90) 2004 – 2011 330 d (N57 D30 A) – 180 kW / 245 HP
  • BMW 3 Touring (E91) 2004 – 2012 320 d (M47 D20 (204D4)) – 110 kW / 150 HP
  • BMW 3 Touring (E91) 2004 – 2012 320 d (N47 D20 A|N47 D20 C) – 130 kW / 177 HP
  • BMW 3 Touring (E91) 2004 – 2012 320 d (N47 D20 C) – 135 kW / 184 HP
  • BMW 3 Touring (E91) 2004 – 2012 330 d (N57 D30 A) – 180 kW / 245 HP
  • BMW X1 (E84) 2009 – 2015 sDrive 16 d (N47 D20 C) – 85 kW / 116 HP
  • BMW X1 (E84) 2009 – 2015 sDrive 18 d (N47 D20 C) – 105 kW / 143 HP
  • BMW X1 (E84) 2009 – 2015 sDrive 20 d (N47 D20 C) – 130 kW / 177 HP
  • BMW X1 (E84) 2009 – 2015 sDrive 20 d (N47 D20 C) – 135 kW / 184 HP
  • BMW X1 (E84) 2009 – 2015 xDrive 20 d (N47 D20 C) – 130 kW / 177 HP
  • BMW X1 (E84) 2009 – 2015 xDrive 20 d (N47 D20 C) – 135 kW / 184 HP
  • BMW X1 (E84) 2009 – 2015 xDrive 23 d (N47 D20 D) – 150 kW / 204 HP
  • BMW X1 (E84) 2009 – 2015 xDrive 25 d (N47 D20 D) – 160 kW / 218 HP

Fitment support

Not sure if this part fits your vehicle? Contact MiMi Auto Parts with your vehicle make, model, year, and engine code before ordering and we will help confirm fitment.

Installation note

Cooling system work involves draining and refilling coolant and may require specialised tools. Professional installation is recommended to ensure correct coolant mixture, bleeding of air from the system, and leak-free connections.

Frequently Asked Questions

What are the signs of a failing water pump?

Common signs may include coolant leaks near the front of the engine, engine overheating, a whining or grinding noise from the water pump area, or coolant loss without visible external leaks. Diagnosis should be confirmed before replacement.

Can I drive with a coolant leak?

Driving with a coolant leak is not recommended. Loss of coolant can lead to engine overheating and potentially serious engine damage. The vehicle should be inspected and the leak repaired before further driving.

Does this part fit my vehicle?

Please check the vehicle compatibility section on this page and confirm your vehicle make, model, year, engine size, and engine code before ordering. If you are unsure, contact MiMi Auto Parts before checkout.

Is the price VAT-inclusive?

Yes, product prices on MiMi Auto Parts are shown inclusive of VAT where applicable.

Do you deliver across South Africa?

Yes, MiMi Auto Parts delivers nationwide in South Africa. Delivery cost and estimated timing are calculated during checkout based on your location.

Is professional installation recommended?

Professional installation is recommended for safety-critical and technical parts such as airbag, clock spring, brakes, suspension, steering, clutch, cooling, engine, and electrical components. For guidance specific to this part, see the installation note on this page.

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